Zwitterion Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about Zwitterion? On this page you'll find 83 study documents about Zwitterion.
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Test Bank for Lehninger Principles of Biochemistry 7th Edition by Nelson (complete, questions/answers/rationales)
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The chirality of an amino acid results from the fact that its α carbon: 
A) has no net charge. 
B) is a carboxylic acid. 
C) is bonded to four different chemical groups. 
D) is in the L absolute configuration in naturally occurring proteins. 
E) is symmetric. 
C) is bonded to four different chemical groups. 
 
 
 
Of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________. 
A) alanine; is a simple methyl group 
B) glycine; is a hydrog...
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Biochemistry comprehensive examination with 100% verified answers 2024
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Biochemistry comprehensive examination with 100% verified answers 2024 
All amino acids contain a central carbon, a side chain (R group), an amino group and a __________ group. 
Carboxyl 
 
 
 
Amino acids can undergo a proton transfer, thus giving both a (+) and (-) charge. This molecular state is called the ________. 
Zwitterion 
 
 
Amino acid that are unable to be synthesised from biochemical pathways within a cell have to be consumed through dietary intake. These are called _______ amino ac...
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Proteins, Enzymes, and Nucleic Acids
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Amino Acids - The building blocks of proteins. 
 
Amino Acids - Contain a carboxylic acid group and and an amino acid group on the alpha carbon. 
 
Amino Acids - are ionized in solution. 
 
Amino Acids - Each contain a different side group (R). 
 
Nonpolar - Hydrocarbon side chains (hydrophobic) 
 
Polar (neutral) - Polar or ionic side chains (hydrophilic) 
 
Polar (acidic) - Acidic side chains (hydrophilic) 
 
Polar (basic) - -NH2 side chains (hydrophilic) 
 
H, an alkyl group, or aromatic - A ...
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ACS Biochemistry Exam Questions With Complete Solutions
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ACS Biochemistry Exam Questions With Complete Solutions 
 
Metabolism (catabolism and anabolism) - ANSWERS Metabolism: sum of total chemical reactions in an organism, also the method by which cells extract and use energy from their environment. 
 
Catabolism: The process by which stored nutrients and ingested foods are converted to a usable form of energy. It produces simple products CO2, H2O, NH3, and building blocks such as sugars and fats that are used in anabolism. 
 
Anabolism: t...
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Test Bank For Biochemistry Concepts And Connections 1st Edition Appling
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Biochemistry: Concepts and Connections (Appling et al.) Chapter 1 Biochemistry and the Language of Chemistry 
1) The water content in the human body is approximately: A) 90%. 
B) 80%. 
C) 70%. 
D) 60%. 
E) 50%. Answer: C 
2) The four most abundant chemical elements in living systems are: A) hydrogen, oxygen, sulfur and phosphorus. 
B) hydrogen, carbon, nitrogen and oxygen. 
C) sodium, potassium, carbon and oxygen. 
D) sodium, potassium, nitrogen and sulfur. E) carbon, nitrogen, oxygen and potass...
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Biochemistry - Exam 1 Practice Questions and Answers 2022
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In a bacterial cell, the DNA is in the: 
A) cell envelope. 
B) cell membrane. 
C) nucleoid. 
D) nucleus. 
E) ribosomes. 
nucleoid 
 
 
A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: 
A) DNA. 
B) photosynthetic capability. 
C) plasma membranes. 
D) ribosomes. 
E) the nucleus 
the nucleus 
 
 
 
 
 
 
00:34 
01:10 
In eukaryotes, the nucleus is enclosed by a double membrane called the: 
A) cell membrane. 
B) nuclear envelope. 
C) nucleolus. 
D) nuc...
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AQA A Level Chemistry 2022 Paper 2 SOLUTION 2023//2024
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AQA A Level Chemistry 
2022 Paper 2 
SOLUTION 2023//2024 
How can we make polymers more flexible? - ANSWER By adding a plasticiser 
How do plasticisers make polymers more flexible? - ANSWER They stick between the 
chains and keep the polymers further apart from each other, weakening the van der 
Waals forces and lets chains slide more easily. 
Uses of Kevlar - ANSWER bulletproof and used in body armour. 
Uses of Nylon - ANSWER commonly used in textiles. 
Why are polymers strong? - ANSWER Poly...
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ACS Biochemistry 2023-2024 Final (100% Correct Answers)
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pKa (chapter 3) correct answers measure of the tendency of a group to give up a proton (acidity); tendency decreases tenfold as pKa increases by one unit 
 
thioester bond (1) correct answers compounds with functional group C-S-CoA-C (eg, in acetyl-CoA) 
 
zwitterion (3) correct answers dipolar ion with both positive and negative groups but overall neutral charge; can act as either an acid or base 
 
Isoelectric point (pI) (chapter 3) correct answers the characteristic pH at which the net electr...
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Lab 4 The synthesis of acetaminophen
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A copy of answers and feedback for the laboratory of organic chemistry course.
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Biochemistry Test 1 with correct answers 2023-24
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Biochemistry Test 1 
 
 
 
 
 
 
biochemistry - correct answer a discipline in biochemistry; is the description of molecules in biology/chemistry of proteins 
 
molecular biology - correct answer a discipline in biochemistry; the manipulation of DNA, genetics 
 
cell biology - correct answer a discipline in biochemistry; larger scale, functions and mechanisms within a cell/cell energetics 
 
cellulose - correct answer a natural polymer; found in plants for storage 
 
glycogen - correct answer a ...